The given statement "wilderness ecosystems are dynamic, complex, and often fragile, and may be impacted by human use and activities occurring both within and outside wilderness boundaries," is true.
Wilderness ecosystems
The wilderness ecosystem is the ecosystem that has been left undisturbed by humans. There are many areas on the planet that are considered wilderness such as the Great Barrier Reef, the Amazon forest, etc. They are rich in both flora and fauna diversity.
In the United States, a total of 42× ha is under the protection of the National Wilderness Prevention System. They are the lands devoted to the protection of the natural ecosystem. Such an arrangement had to be made due to human encroachment and various other factors that affect the wilderness ecosystem. The main threats to the wilderness ecosystem are
- Using the land for recreational uses
- Grazing by livestock
- Forest fire
- Pollution
- Global warming
- Invasion of alien species
- The unnatural flow of water due to diversions, dams, impoundments, etc.
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An isotonic solution has an equal amount of water moving in and out of the cell.
A hypertonic solution are those in which more solute (and hence lower water potential) is present which means when a cell is placed in a hypertonic solution the liquid that is found in the cell will leave it and that means the cell will shrink and shrivel because it has no liquid in it.
The macro algae do not have stomata, xylem or phloem like most multi cellular land plants.
Explanation:
Macro algae do not have roots, stem or leaves hence no stomata, xylem or phloem. Although they have chlorophyll and other photosynthetic pigments.
Macro algae grow on hard sedimentary rocks but not on mud as they do not have roots while all land plants grow on mud.
Macro algae also called seaweed which are multicellular and autotrophic ie they can perform photosynthesis.
Answer:
from a higher concentrated region to a lower concentrated region till they are evenly dis